201020431 has 8 divisors (see below), whose sum is σ = 208111680. Its totient is φ = 193939872.

The previous prime is 201020423. The next prime is 201020441. The reversal of 201020431 is 134020102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201020431 - 2³ = 201020423 is a prime.

It is a super-2 number, since 2×201020431² = 80818427358851522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64986 + ... + 68008.

It is an arithmetic number, because the mean of its divisors is an integer number (26013960).

Almost surely, 2^201020431 is an apocalyptic number.

201020431 is a deficient number, since it is larger than the sum of its proper divisors (7091249).

201020431 is a wasteful number, since it uses less digits than its factorization.

201020431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 201020431 is about 14178.1674062623. The cubic root of 201020431 is about 585.7964470250.

Adding to 201020431 its reverse (134020102), we get a palindrome (335040533).

The spelling of 201020431 in words is "two hundred one million, twenty thousand, four hundred thirty-one".